diff --git a/src/MediaFile/MP4Recorder.cpp b/src/MediaFile/MP4Recorder.cpp
index 658243c9..0f36561c 100644
--- a/src/MediaFile/MP4Recorder.cpp
+++ b/src/MediaFile/MP4Recorder.cpp
@@ -153,6 +153,14 @@ void MP4Recorder::onTrackReady(const Track::Ptr & track){
 	}
 }
 
+void MP4Recorder::resetTracks() {
+	closeFile();
+	_tracks.clear();
+	_haveVideo = false;
+	_createFileTicker.resetTime();
+	MediaSink::resetTracks();
+}
+
 } /* namespace mediakit */
 
 
diff --git a/src/MediaFile/MP4Recorder.h b/src/MediaFile/MP4Recorder.h
index ca97cb3f..0c619461 100644
--- a/src/MediaFile/MP4Recorder.h
+++ b/src/MediaFile/MP4Recorder.h
@@ -63,6 +63,11 @@ public:
 			 const string &strApp,
 			 const string &strStreamId);
 	virtual ~MP4Recorder();
+
+	/**
+	 * 重置所有Track
+	 */
+	void resetTracks() override;
 private:
 	/**
      * 某Track输出frame，在onAllTrackReady触发后才会调用此方法